Sigma 20mm F1.8 EX DG Aspherical RF Specs
Wideangle prime lens | Canon EF, Nikon F (FX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha
| Principal specifications | ||
|---|---|---|
| Lens type | Prime lens | |
| Max Format size | 35mm FF | |
| Focal length | 20 mm | |
| Image stabilization | No | |
| Lens mount | Canon EF, Nikon F (FX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha | |
| Aperture | ||
| Maximum aperture | F1.8 | |
| Minimum aperture | F22 | |
| Aperture ring | Yes | |
| Number of diaphragm blades | 9 | |
| Optics | ||
| Elements | 13 | |
| Groups | 11 | |
| Special elements / coatings | 2 aspherical elements | |
| Focus | ||
| Minimum focus | 0.20 m (7.87″) | |
| Autofocus | Yes | |
| Full time manual | Yes | |
| Focus method | Rear | |
| Focus notes | dual focus mechanism | |
| Distance scale | Yes | |
| DoF scale | Yes | |
| Physical | ||
| Weight | 520 g (1.15 lb) | |
| Diameter | 89 mm (3.49″) | |
| Length | 90 mm (3.52″) | |
| Colour | Black | |
| Filter thread | 82 mm | |
| Hood supplied | Yes | |
| Hood product code | petal type hood | |
| Tripod collar | No | |
| Other | ||
Have you spotted an error? Report it...
Please use the form below to report the error.
 |  |  |  |  |  |  |
| Life Strong by Nilesh Trivedi from Tell Your Story, persistence, & rebirth | Little Blue Heron by krc2020 from Herons, Egrets, or Ibises | Female Yellow Dung Fly by mikero from Insect/Spider - macro only and no close-up | No deal by Hooyat from Neither a lender or a borrower be | Couples' oh No moment! by mythshri from Seated Couples | PA020047.Bald Eagle Approach.2 by Hornsbee from BIF | The king of the mountain by Dan Paris from Landscape with Wildlife |
